test

booking.emails_admin.inc

@@ -285,8 +285,12 @@ function booking_emails_custom_ajax_form($node, &$form_state) {
     $emailtype = $form_state['input']['email-type'];
     $subject_value = $form_state['input']['booking_email_subjectline_custom'];
     $body_value = $form_state['input']['booking_email_body_custom']['value'];
+
+    // only enable the submit button if the email type is not the initial empty one
+    if ($form_state['input']['email-type'] !== 'NULL') {
       $submit_button_disabled = FALSE;
     }
+  }  
 
   if(variable_get('booking_enable_html_mail', 0) == 1) {
     $form_type = 'text_format';